Practice of Roof Control at Blasting and Caving Face With Strike Long Wall Mining

The mining method of strike longwall blasting and caving was applied in the complex geological conditions in Hebi Coal Group,such as the composite roof,more fault structures and soft coal seams.In the blasting and caving process,steel beams,shed supports and hydraulic supports were used for joint control of roof.The measures of roof control fitting the coal mine were found out.The mine safety and production were guided.The better economic benefits were obtained.The valuable experiences were provided for mimilar coal mines.